In this study the effect of using ultrafiltration (UF) processes, incorporating Oats (Avena sativa L.) powder (0, 1, 2%) and probiotic bacteria on the properties and nutritional value of synbiotic functional UF-low and full-fat Labneh was investigated. Mixed starter of Lactobacillus casei and Lactobacillus paracasei (1:1) was added (2%) and used as probiotic bacteria. The samples of both controls and all resultant synbiotic Labneh treatments were analyzed for gross chemical composition, microbiological and sensory attributes during 35 and 21 days, respectively at 5 °C. Also nutritional values were determined and calculated in all fresh samples. Lactose content and pH values were decreased during the storage period in all Labneh samples. Results showed that all low-fat Labneh treatments can provide human with high protein amount daily value (20% DV or more) while, low-fat UF-Labneh supplemented with 2% Oats recorded the highest daily values of protein (24.52%). Moreover, the results indicated that adding 2% of Oats to the UF-low fat Labneh, improve sensory parameters, motivate the numbers of probiotic bacteria and extended the shelf life. Moreover, all Labneh treatments were free from coliform group through all storage periods. The highest sensory total score was observed for UF-low fat Labneh at 7 days of storage and UF-low fat Labneh supplemented with 1% Oats at 28 days of storage. Finally, in this study using UF-technique and adding Oats powder in making Labneh, improved the nutritional value as it increased protein, %DV and fiber contents and decreasing lactose content which will be suitable for people who suffering from lactose intolerance. Also using the probiotic bacteria which produce bacteriocins; minimize the fungi and psychrophilic bacterial counts.

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This study aimed to evaluate the effect of adding different ratios of oats on the properties and nutritional value of low and freefat fermented milk drink as a functional dairy product for enhancing human health. The product was fermented using mixed starter of L. casei HQ177095 and L. paracasei HQ177096.1 (1:1) and supplemented with oats at ratios of 1 and 2%. Samples of fermented milk drinks were stored at 5±1°C for 21 days. Microbiological, chemical, physical, organoleptic properties and nutritional value were carried out during storage period. Results indicated that there were slight changes in some chemical composition during storage, while changes in lactose content, pH values and titratable acidity were significant. Also, the microbiological examination indicated that treatments significantly enhanced the viability of LAB and affected total viable counts and psychrophilic bacteria during storage. Regarding to organoleptic properties, it was noticed that fermented milk drinks which supplemented with oats had the higher total scores than controls. Moreover, fermented drinks supplemented with 2% oats showed better physical characteristics (viscosity and syneresis) than other treatments. The product can be recommended as a good source of iron, protein and can be considered as healthy foods, contain low fat and low calories.